:root{--bg:#fff;--fg:#14213d;--muted:#4b5a73;--accent:#1d4ed8;--accent-fg:#fff;--tile:#f1f5fb;--border:#c9d4e6;--focus:#b45309;--ok:#166534;--flag:#9a3412;--gutter:16px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:18px;line-height:1.45}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}:root:not([data-theme=light]){--bg:#0e1626;--fg:#eaf0fb;--muted:#aebbd3;--accent:#7aa2ff;--accent-fg:#0e1626;--tile:#17233a;--border:#2c3b57;--focus:#fbbf24;--ok:#86efac;--flag:#fdba74}}:root[data-theme=dark]{--bg:#0e1626;--fg:#eaf0fb;--muted:#aebbd3;--accent:#7aa2ff;--accent-fg:#0e1626;--tile:#17233a;--border:#2c3b57;--focus:#fbbf24;--ok:#86efac;--flag:#fdba74}*{box-sizing:border-box}body{background:var(--bg);color:var(--fg);min-height:100vh;margin:0}a{color:var(--accent)}:focus-visible{outline:3px solid var(--focus);outline-offset:2px}h1,h2,h3{margin:0 0 .5rem;line-height:1.2}.page{max-width:40rem;padding:var(--gutter);padding-bottom:calc(var(--gutter) + env(safe-area-inset-bottom));margin:0 auto}.wordmark{letter-spacing:.04em;color:var(--muted);margin-bottom:.75rem;font-size:.85rem;text-decoration:none;display:inline-block}.muted{color:var(--muted)}.row-link,.tile{color:inherit;background:var(--tile);border:1px solid var(--border);border-radius:12px;min-height:56px;padding:14px 16px;text-decoration:none;display:block}.row-link:hover,.tile:hover{border-color:var(--accent)}.tiles{grid-template-columns:1fr 1fr;gap:12px;margin:0 0 1.25rem;padding:0;list-style:none;display:grid}.tiles .tile{height:100%}.tile strong{font-size:1.1rem;display:block}.group-label{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:1.25rem 0 .5rem;font-size:.85rem}.levels{gap:10px;margin:0;padding:0;list-style:none;display:grid}.status{white-space:nowrap;font-size:.9rem;font-weight:600}.status.known{color:var(--ok)}.status.review{color:var(--flag)}button,.button{font:inherit;border:1px solid var(--accent);background:var(--accent);min-height:48px;color:var(--accent-fg);cursor:pointer;border-radius:10px;padding:0 18px}details summary{cursor:pointer;min-height:32px}code,.mono{font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:.9em}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.site-header{justify-content:space-between;align-items:center;margin-bottom:.75rem;display:flex}.site-header .wordmark{margin:0}.site-header nav{gap:16px;display:flex}.site-header nav a{align-items:center;min-height:44px;display:inline-flex}.page.embedded{padding-top:8px}.notice{background:var(--tile);border:1px solid var(--border);border-radius:12px;margin-bottom:1rem;padding:10px 14px}.notice p{margin:0 0 8px}.notice button{margin-right:12px}.tile.resume{border-color:var(--accent);margin-bottom:1rem}button.secondary,.button.secondary{color:var(--accent);background:0 0}.button{align-items:center;padding:10px 18px;text-decoration:none;display:inline-flex}button.link{color:var(--accent);background:0 0;border:none;min-height:44px;padding:0 4px;text-decoration:underline}button:disabled{opacity:.45;cursor:default}.practice{flex-direction:column;min-height:calc(100dvh - 90px);display:flex}.practice-head{justify-content:space-between;align-items:center;gap:8px;display:flex}.practice-head a{align-items:center;min-height:44px;display:inline-flex}.score{text-align:center;margin:0}.card{font-variant-numeric:tabular-nums;justify-content:center;align-items:center;gap:.35em;padding:1.6rem 0 .8rem;font-size:clamp(2.1rem,10.5vw,3rem);font-weight:600;display:flex}.part.blank{text-align:center;border:3px solid var(--border);border-radius:10px;min-width:1.9em;height:1.4em;line-height:1.3;display:inline-block}.part.blank.right{border-color:var(--ok);color:var(--ok)}.part.blank.wrong{border-color:var(--flag)}.working{text-align:center;min-height:7.5rem;padding:0 4px 8px;font-size:1.2rem}.working .note{display:block}.solution{font-variant-numeric:tabular-nums;margin-top:.35rem;font-size:clamp(1.9rem,9vw,2.6rem);font-weight:700;display:block}.timer{color:var(--muted);font-size:.9rem;display:block}.keyboard{-webkit-user-select:none;user-select:none;gap:8px;margin-top:auto;padding-bottom:4px;display:grid}.key{touch-action:manipulation;border:1px solid var(--border);background:var(--tile);min-height:58px;color:var(--fg);border-radius:12px;font-size:1.5rem;font-weight:600}.key.action{color:var(--accent);font-size:1.05rem}.key.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-fg);font-size:1.15rem}.key.wide{min-height:72px;font-size:1.3rem}.actions{grid-auto-columns:1fr;grid-auto-flow:column;gap:8px;display:grid}.pad{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.choices{grid-template-columns:1fr 1fr;gap:8px;display:grid}.key.choice{min-height:84px;font-size:2rem}.summary-actions{gap:10px;margin-top:1.25rem;display:grid}.summary-actions .button,.summary-actions button{text-align:center;justify-content:center}.encourage{background:var(--tile);border-left:4px solid var(--accent);border-radius:6px;padding:10px 14px}.missed{font-variant-numeric:tabular-nums;text-align:center;gap:10px 14px;margin:.5rem 0 0;padding:0;font-size:clamp(1.4rem,6.5vw,1.9rem);font-weight:700;list-style:none;display:grid}.missed li{background:var(--tile);border:1px solid var(--border);border-radius:10px;padding:8px 6px}.missed.two{grid-template-columns:1fr 1fr}.confetti{pointer-events:none;z-index:10;position:fixed;inset:0;overflow:hidden}.confetti span{opacity:0;border-radius:2px;width:9px;height:14px;animation:2.4s ease-in forwards confetti-fall;position:absolute;top:-16px}@keyframes confetti-fall{0%{opacity:1;transform:translateY(0)rotate(0)}to{transform:translateY(105vh) rotate(var(--turn));opacity:.9}}.settings fieldset{border:1px solid var(--border);border-radius:12px;margin:0 0 1rem;padding:8px 14px 14px}.settings legend{padding:0 6px;font-weight:700}.choice-row{align-items:center;gap:10px;min-height:44px;display:flex}.choice-row input{width:22px;height:22px}.length-row{gap:8px;display:flex}.length-row button{color:var(--accent);background:0 0;flex:1}.length-row button.selected{background:var(--accent);color:var(--accent-fg)}.settings select{font:inherit;max-width:100%;min-height:44px}.help{line-height:1.55}dialog{border:1px solid var(--border);background:var(--bg);max-width:min(32rem,100vw - 32px);color:var(--fg);border-radius:14px;padding:18px}dialog::backdrop{background:#00000073}.dialog-actions{gap:8px;margin-top:12px;display:grid}.summary-actions .hint{opacity:.9;font-size:.85rem;font-weight:400;display:block}.summary-actions button{padding-top:8px;padding-bottom:8px}